Drain plug for wine preservation



FIG. 1 is a perspective view of the drain plug for wine preservation showing my new design.

FIG. 2 is a side elevation view of the drain plug for wine preservation, the other side elevation views of the drain plug for wine preservation being duplicative thereof.

FIG. 3 is a top plan view of the drain plug for wine preservation; and,

FIG. 4 is a bottom plan view of the drain plug for wine preservation.

The broken lines are for illustration purposes only and form no part of the claimed design. 

The ornamental design for a drain plug for wine preservation, as shown and described. 